YOKOGAWA DTSXL, User Manual, Page: 272 / 289

< PART – C Operation and Maintenance >
C-19
IM 39J06B40-01EN 14th Edition: May 30, 2022
C4.3. Parts with Limited Lifespan
This section describes parts that have limited life spans.
Parts with limited life spans degrade in performance and reliability over time, resulting in
loss of function or ultimately breakdown. For DTSXL System, parts with limit life spans
are defined as "parts that are expected to exhibit function loss and malfunction due to
wear within 10 years when the average temperature of the air intake from the bottom of
the module is 30°C."
C4.3.1. Batteries for DTSX3000
The DTSX3000 have lithium batteries installed to maintain data and the RTC (Real-time
clock) when power is off.
The recommended replacement period varies depending on the operating environment
and conditions (operation time and ambient temperature).
Table Limited Lifespan Component (Battery)
Product name Part number
Battery S9883FA

Recommended Replacement Period
The battery lifespan greatly depends on ambient temperature. The following table shows
the ambient temperatures and recommended replacement periods for the battery.
A label for writing battery replacement dates is supplied with the unit. As a guide, write
the year and month when the unit should be next replaced on the label and affix it to an
easily visible location.
Table Ambient Temperatures and Recommended Replacement Periods of the Battery
Ambient temperature ( *1) Replacement period
-40 °C 10 years
25 °C 10 years
35 °C 8 years
45 °C 4.5 years
55 °C 3 years
65 °C 2 years
*1: The ambient temperature is the average temperature in which the unit is used.
Figure Battery Replacement Period Label
CAUTION
- Even when the average ambient temperature is below 25 °C, the battery should be
replaced after 10 years.
- If the unit is used beyond its recommended replacement period, the battery may
leak.
- If the battery leaks, a strong odor may be produced and the metal parts may be
corroded.
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